जल की कठोरता को दूर करने के – InterviewSolution

1.	जल की कठोरता को दूर करने के दो उपाय लिखिए।
Answer» जल की अस्थायी कठोरता जल को उबालकर दूर की जा सकती है। जल की स्थायी कठोरता को दूर करने के लिए जल में सोड़े तथा चूने का मिश्रण मिलाया जाता है।

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